55221125 has 16 divisors (see below), whose sum is σ = 72546240. Its totient is φ = 41850000.

The previous prime is 55221119. The next prime is 55221143. The reversal of 55221125 is 52112255.

55221125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55221125 - 2¹⁰ = 55220101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55221125.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9251 + ... + 14000.

It is an arithmetic number, because the mean of its divisors is an integer number (4534140).

Almost surely, 2^55221125 is an apocalyptic number.

It is an amenable number.

55221125 is a deficient number, since it is larger than the sum of its proper divisors (17325115).

55221125 is a wasteful number, since it uses less digits than its factorization.

55221125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23285 (or 23275 counting only the distinct ones).

The product of its digits is 1000, while the sum is 23.

The square root of 55221125 is about 7431.0917771213. The cubic root of 55221125 is about 380.8042178353.

The spelling of 55221125 in words is "fifty-five million, two hundred twenty-one thousand, one hundred twenty-five".